Skip to main content
aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorFelipe Heidrich2009-06-30 22:00:12 +0000
committerFelipe Heidrich2009-06-30 22:00:12 +0000
commitf664d297f7bb009784868bf3fcf0b3e3bb9a646b (patch)
tree54012fe4929893eef4891c88cbbf5841272ff433 /bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java
parentbc18a5e014088ce811f09c603b88361094486062 (diff)
downloadeclipse.platform.swt-f664d297f7bb009784868bf3fcf0b3e3bb9a646b.tar.gz
eclipse.platform.swt-f664d297f7bb009784868bf3fcf0b3e3bb9a646b.tar.xz
eclipse.platform.swt-f664d297f7bb009784868bf3fcf0b3e3bb9a646b.zip
*** empty log message ***
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java')
-rw-r--r--bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java768
1 files changed, 0 insertions, 768 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java
deleted file mode 100644
index b2fcd24553..0000000000
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ScrollBar.java
+++ /dev/null
@@ -1,768 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2009 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.swt.widgets;
-
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.internal.gtk.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.events.*;
-
-/**
- * Instances of this class are selectable user interface
- * objects that represent a range of positive, numeric values.
- * <p>
- * At any given moment, a given scroll bar will have a
- * single 'selection' that is considered to be its
- * value, which is constrained to be within the range of
- * values the scroll bar represents (that is, between its
- * <em>minimum</em> and <em>maximum</em> values).
- * </p><p>
- * Typically, scroll bars will be made up of five areas:
- * <ol>
- * <li>an arrow button for decrementing the value</li>
- * <li>a page decrement area for decrementing the value by a larger amount</li>
- * <li>a <em>thumb</em> for modifying the value by mouse dragging</li>
- * <li>a page increment area for incrementing the value by a larger amount</li>
- * <li>an arrow button for incrementing the value</li>
- * </ol>
- * Based on their style, scroll bars are either <code>HORIZONTAL</code>
- * (which have a left facing button for decrementing the value and a
- * right facing button for incrementing it) or <code>VERTICAL</code>
- * (which have an upward facing button for decrementing the value
- * and a downward facing buttons for incrementing it).
- * </p><p>
- * On some platforms, the size of the scroll bar's thumb can be
- * varied relative to the magnitude of the range of values it
- * represents (that is, relative to the difference between its
- * maximum and minimum values). Typically, this is used to
- * indicate some proportional value such as the ratio of the
- * visible area of a document to the total amount of space that
- * it would take to display it. SWT supports setting the thumb
- * size even if the underlying platform does not, but in this
- * case the appearance of the scroll bar will not change.
- * </p><p>
- * Scroll bars are created by specifying either <code>H_SCROLL</code>,
- * <code>V_SCROLL</code> or both when creating a <code>Scrollable</code>.
- * They are accessed from the <code>Scrollable</code> using
- * <code>getHorizontalBar</code> and <code>getVerticalBar</code>.
- * </p><p>
- * Note: Scroll bars are not Controls. On some platforms, scroll bars
- * that appear as part of some standard controls such as a text or list
- * have no operating system resources and are not children of the control.
- * For this reason, scroll bars are treated specially. To create a control
- * that looks like a scroll bar but has operating system resources, use
- * <code>Slider</code>.
- * </p>
- * <dl>
- * <dt><b>Styles:</b></dt>
- * <dd>HORIZONTAL, VERTICAL</dd>
- * <dt><b>Events:</b></dt>
- * <dd>Selection</dd>
- * </dl>
- * <p>
- * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
- * </p><p>
- * IMPORTANT: This class is <em>not</em> intended to be subclassed.
- * </p>
- *
- * @see Slider
- * @see Scrollable
- * @see Scrollable#getHorizontalBar
- * @see Scrollable#getVerticalBar
- * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
- * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
- * @noextend This class is not intended to be subclassed by clients.
- */
-public class ScrollBar extends Widget {
- Scrollable parent;
- int /*long*/ adjustmentHandle;
- int detail;
- boolean dragSent;
-
-ScrollBar () {
-}
-
-/**
-* Creates a new instance of the widget.
-*/
-ScrollBar (Scrollable parent, int style) {
- super (parent, checkStyle (style));
- this.parent = parent;
- createWidget (0);
-}
-
-/**
- * Adds the listener to the collection of listeners who will
- * be notified when the user changes the receiver's value, by sending
- * it one of the messages defined in the <code>SelectionListener</code>
- * interface.
- * <p>
- * When <code>widgetSelected</code> is called, the event object detail field contains one of the following values:
- * <code>SWT.NONE</code> - for the end of a drag.
- * <code>SWT.DRAG</code>.
- * <code>SWT.HOME</code>.
- * <code>SWT.END</code>.
- * <code>SWT.ARROW_DOWN</code>.
- * <code>SWT.ARROW_UP</code>.
- * <code>SWT.PAGE_DOWN</code>.
- * <code>SWT.PAGE_UP</code>.
- * <code>widgetDefaultSelected</code> is not called.
- * </p>
- *
- * @param listener the listener which should be notified when the user changes the receiver's value
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #removeSelectionListener
- * @see SelectionEvent
- */
-public void addSelectionListener (SelectionListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- TypedListener typedListener = new TypedListener (listener);
- addListener (SWT.Selection,typedListener);
- addListener (SWT.DefaultSelection,typedListener);
-}
-
-static int checkStyle (int style) {
- return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0);
-}
-
-void deregister () {
- super.deregister ();
- if (adjustmentHandle != 0) display.removeWidget (adjustmentHandle);
-}
-
-void destroyHandle () {
- super.destroyWidget ();
-}
-
-void destroyWidget () {
- parent.destroyScrollBar (this);
- releaseHandle ();
- //parent.sendEvent (SWT.Resize);
-}
-
-/**
- * Returns <code>true</code> if the receiver is enabled, and
- * <code>false</code> otherwise. A disabled control is typically
- * not selectable from the user interface and draws with an
- * inactive or "grayed" look.
- *
- * @return the receiver's enabled state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see #isEnabled
- */
-public boolean getEnabled () {
- checkWidget ();
- if (handle != 0) return OS.GTK_WIDGET_SENSITIVE (handle);
- return true;
-}
-
-/**
- * Returns the amount that the receiver's value will be
- * modified by when the up/down (or right/left) arrows
- * are pressed.
- *
- * @return the increment
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getIncrement () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.step_increment;
-}
-
-/**
- * Returns the maximum value which the receiver will allow.
- *
- * @return the maximum
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getMaximum () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.upper;
-}
-
-/**
- * Returns the minimum value which the receiver will allow.
- *
- * @return the minimum
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getMinimum () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.lower;
-}
-
-/**
- * Returns the amount that the receiver's value will be
- * modified by when the page increment/decrement areas
- * are selected.
- *
- * @return the page increment
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getPageIncrement () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.page_increment;
-}
-
-/**
- * Returns the receiver's parent, which must be a Scrollable.
- *
- * @return the receiver's parent
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public Scrollable getParent () {
- checkWidget ();
- return parent;
-}
-
-/**
- * Returns the single 'selection' that is the receiver's value.
- *
- * @return the selection
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getSelection () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.value;
-}
-
-/**
- * Returns a point describing the receiver's size. The
- * x coordinate of the result is the width of the receiver.
- * The y coordinate of the result is the height of the
- * receiver.
- *
- * @return the receiver's size
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public Point getSize () {
- checkWidget ();
- if (handle == 0) return new Point (0,0);
- GtkRequisition requisition = new GtkRequisition ();
- OS.gtk_widget_size_request (handle, requisition);
- return new Point (requisition.width, requisition.height);
-}
-
-/**
- * Returns the size of the receiver's thumb relative to the
- * difference between its maximum and minimum values.
- *
- * @return the thumb value
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see ScrollBar
- */
-public int getThumb () {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- return (int) adjustment.page_size;
-}
-
-/**
- * Returns <code>true</code> if the receiver is visible, and
- * <code>false</code> otherwise.
- * <p>
- * If one of the receiver's ancestors is not visible or some
- * other condition makes the receiver not visible, this method
- * may still indicate that it is considered visible even though
- * it may not actually be showing.
- * </p>
- *
- * @return the receiver's visibility state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public boolean getVisible () {
- checkWidget ();
- int /*long*/ scrolledHandle = parent.scrolledHandle;
- int [] hsp = new int [1], vsp = new int [1];
- OS.gtk_scrolled_window_get_policy (scrolledHandle, hsp, vsp);
- if ((style & SWT.HORIZONTAL) != 0) {
- return hsp [0] != OS.GTK_POLICY_NEVER;
- } else {
- return vsp [0] != OS.GTK_POLICY_NEVER;
- }
-}
-
-int /*long*/ gtk_button_press_event (int /*long*/ widget, int /*long*/ eventPtr) {
- int /*long*/ result = super.gtk_button_press_event (widget, eventPtr);
- if (result != 0) return result;
- detail = OS.GTK_SCROLL_NONE;
- dragSent = false;
- return result;
-}
-
-int /*long*/ gtk_change_value (int /*long*/ widget, int /*long*/ scroll, int /*long*/ value1, int /*long*/ value2) {
- detail = (int)/*64*/scroll;
- return 0;
-}
-
-int /*long*/ gtk_value_changed (int /*long*/ adjustment) {
- Event event = new Event ();
- dragSent = detail == OS.GTK_SCROLL_JUMP;
- switch (detail) {
- case OS.GTK_SCROLL_NONE: event.detail = SWT.NONE; break;
- case OS.GTK_SCROLL_JUMP: event.detail = SWT.DRAG; break;
- case OS.GTK_SCROLL_START: event.detail = SWT.HOME; break;
- case OS.GTK_SCROLL_END: event.detail = SWT.END; break;
- case OS.GTK_SCROLL_PAGE_DOWN:
- case OS.GTK_SCROLL_PAGE_RIGHT:
- case OS.GTK_SCROLL_PAGE_FORWARD: event.detail = SWT.PAGE_DOWN; break;
- case OS.GTK_SCROLL_PAGE_UP:
- case OS.GTK_SCROLL_PAGE_LEFT:
- case OS.GTK_SCROLL_PAGE_BACKWARD: event.detail = SWT.PAGE_UP; break;
- case OS.GTK_SCROLL_STEP_DOWN:
- case OS.GTK_SCROLL_STEP_RIGHT:
- case OS.GTK_SCROLL_STEP_FORWARD: event.detail = SWT.ARROW_DOWN; break;
- case OS.GTK_SCROLL_STEP_UP:
- case OS.GTK_SCROLL_STEP_LEFT:
- case OS.GTK_SCROLL_STEP_BACKWARD: event.detail = SWT.ARROW_UP; break;
- }
- detail = OS.GTK_SCROLL_NONE;
- if (!dragSent) detail = OS.GTK_SCROLL_NONE;
- postEvent (SWT.Selection, event);
- parent.updateScrollBarValue (this);
- return 0;
-}
-
-int /*long*/ gtk_event_after (int /*long*/ widget, int /*long*/ gdkEvent) {
- GdkEvent gtkEvent = new GdkEvent ();
- OS.memmove (gtkEvent, gdkEvent, GdkEvent.sizeof);
- switch (gtkEvent.type) {
- case OS.GDK_BUTTON_RELEASE: {
- GdkEventButton gdkEventButton = new GdkEventButton ();
- OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
- if (gdkEventButton.button == 1 && detail == SWT.DRAG) {
- if (!dragSent) {
- Event event = new Event ();
- event.detail = SWT.DRAG;
- postEvent (SWT.Selection, event);
- }
- postEvent (SWT.Selection);
- }
- detail = OS.GTK_SCROLL_NONE;
- dragSent = false;
- break;
- }
- }
- return super.gtk_event_after (widget, gdkEvent);
-}
-
-void hookEvents () {
- super.hookEvents ();
- if (OS.GTK_VERSION >= OS.VERSION (2, 6, 0)) {
- OS.g_signal_connect_closure (handle, OS.change_value, display.closures [CHANGE_VALUE], false);
- }
- OS.g_signal_connect_closure (adjustmentHandle, OS.value_changed, display.closures [VALUE_CHANGED], false);
- OS.g_signal_connect_closure_by_id (handle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
- OS.g_signal_connect_closure_by_id (handle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT], false);
-}
-
-/**
- * Returns <code>true</code> if the receiver is enabled and all
- * of the receiver's ancestors are enabled, and <code>false</code>
- * otherwise. A disabled control is typically not selectable from the
- * user interface and draws with an inactive or "grayed" look.
- *
- * @return the receiver's enabled state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see #getEnabled
- */
-public boolean isEnabled () {
- checkWidget ();
- return getEnabled () && getParent ().getEnabled ();
-}
-
-/**
- * Returns <code>true</code> if the receiver is visible and all
- * of the receiver's ancestors are visible and <code>false</code>
- * otherwise.
- *
- * @return the receiver's visibility state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see #getVisible
- */
-public boolean isVisible () {
- checkWidget ();
- return getVisible () && getParent ().isVisible ();
-}
-
-void register () {
- super.register ();
- if (adjustmentHandle != 0) display.addWidget (adjustmentHandle, this);
-}
-
-void releaseHandle () {
- super.releaseHandle ();
- parent = null;
-}
-
-void releaseParent () {
- super.releaseParent ();
- if (parent.horizontalBar == this) parent.horizontalBar = null;
- if (parent.verticalBar == this) parent.verticalBar = null;
-}
-
-void releaseWidget () {
- super.releaseWidget ();
- //parent = null;
-}
-
-/**
- * Removes the listener from the collection of listeners who will
- * be notified when the user changes the receiver's value.
- *
- * @param listener the listener which should no longer be notified
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #addSelectionListener
- */
-public void removeSelectionListener (SelectionListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- if (eventTable == null) return;
- eventTable.unhook (SWT.Selection, listener);
- eventTable.unhook (SWT.DefaultSelection,listener);
-}
-
-/**
- * Enables the receiver if the argument is <code>true</code>,
- * and disables it otherwise. A disabled control is typically
- * not selectable from the user interface and draws with an
- * inactive or "grayed" look.
- *
- * @param enabled the new enabled state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setEnabled (boolean enabled) {
- checkWidget ();
- if (handle != 0) OS.gtk_widget_set_sensitive (handle, enabled);
-}
-
-/**
- * Sets the amount that the receiver's value will be
- * modified by when the up/down (or right/left) arrows
- * are pressed to the argument, which must be at least
- * one.
- *
- * @param value the new increment (must be greater than zero)
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setIncrement (int value) {
- checkWidget ();
- if (value < 1) return;
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- adjustment.step_increment = (float) value;
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Sets the maximum. If this value is negative or less than or
- * equal to the minimum, the value is ignored. If necessary, first
- * the thumb and then the selection are adjusted to fit within the
- * new range.
- *
- * @param value the new maximum
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setMaximum (int value) {
- checkWidget ();
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- int minimum = (int) adjustment.lower;
- if (value <= minimum) return;
- adjustment.upper = value;
- adjustment.page_size = Math.min ((int)adjustment.page_size, value - minimum);
- adjustment.value = Math.min ((int)adjustment.value, (int)(value - adjustment.page_size));
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Sets the minimum value. If this value is negative or greater
- * than or equal to the maximum, the value is ignored. If necessary,
- * first the thumb and then the selection are adjusted to fit within
- * the new range.
- *
- * @param value the new minimum
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setMinimum (int value) {
- checkWidget ();
- if (value < 0) return;
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- int maximum = (int) adjustment.upper;
- if (value >= maximum) return;
- adjustment.lower = value;
- adjustment.page_size = Math.min ((int)adjustment.page_size, maximum - value);
- adjustment.value = Math.max ((int)adjustment.value, value);
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-void setOrientation () {
- super.setOrientation ();
- if ((parent.style & SWT.MIRRORED) != 0) {
- if ((parent.state & CANVAS) != 0) {
- if ((style & SWT.HORIZONTAL) != 0) {
- OS.gtk_range_set_inverted (handle, true);
- }
- }
- }
-}
-
-/**
- * Sets the amount that the receiver's value will be
- * modified by when the page increment/decrement areas
- * are selected to the argument, which must be at least
- * one.
- *
- * @param value the page increment (must be greater than zero)
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setPageIncrement (int value) {
- checkWidget ();
- if (value < 1) return;
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- adjustment.page_increment = (float) value;
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Sets the single <em>selection</em> that is the receiver's
- * value to the argument which must be greater than or equal
- * to zero.
- *
- * @param selection the new selection (must be zero or greater)
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setSelection (int value) {
- checkWidget ();
- value = Math.min (value, getMaximum() - getThumb());
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_set_value (adjustmentHandle, value);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Sets the size of the receiver's thumb relative to the
- * difference between its maximum and minimum values. This new
- * value will be ignored if it is less than one, and will be
- * clamped if it exceeds the receiver's current range.
- *
- * @param value the new thumb value, which must be at least one and not
- * larger than the size of the current range
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setThumb (int value) {
- checkWidget ();
- if (value < 1) return;
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- value = (int) Math.min (value, (int)(adjustment.upper - adjustment.lower));
- adjustment.page_size = (double) value;
- adjustment.value = Math.min ((int)adjustment.value, (int)(adjustment.upper - value));
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Sets the receiver's selection, minimum value, maximum
- * value, thumb, increment and page increment all at once.
- * <p>
- * Note: This is similar to setting the values individually
- * using the appropriate methods, but may be implemented in a
- * more efficient fashion on some platforms.
- * </p>
- *
- * @param selection the new selection value
- * @param minimum the new minimum value
- * @param maximum the new maximum value
- * @param thumb the new thumb value
- * @param increment the new increment value
- * @param pageIncrement the new pageIncrement value
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setValues (int selection, int minimum, int maximum, int thumb, int increment, int pageIncrement) {
- checkWidget ();
- if (minimum < 0) return;
- if (maximum < 0) return;
- if (thumb < 1) return;
- if (increment < 1) return;
- if (pageIncrement < 1) return;
- thumb = Math.min (thumb, maximum - minimum);
- GtkAdjustment adjustment = new GtkAdjustment ();
- OS.memmove (adjustment, adjustmentHandle);
- adjustment.lower = minimum;
- adjustment.upper = maximum;
- adjustment.step_increment = increment;
- adjustment.page_increment = pageIncrement;
- adjustment.page_size = thumb;
- adjustment.value = Math.min (Math.max (selection, minimum), maximum - thumb);
- OS.memmove (adjustmentHandle, adjustment);
- OS.g_signal_handlers_block_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
- OS.gtk_adjustment_changed (adjustmentHandle);
- OS.gtk_adjustment_value_changed (adjustmentHandle);
- OS.g_signal_handlers_unblock_matched (adjustmentHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
-}
-
-/**
- * Marks the receiver as visible if the argument is <code>true</code>,
- * and marks it invisible otherwise.
- * <p>
- * If one of the receiver's ancestors is not visible or some
- * other condition makes the receiver not visible, marking
- * it visible may not actually cause it to be displayed.
- * </p>
- *
- * @param visible the new visibility state
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setVisible (boolean visible) {
- checkWidget ();
- if (parent.setScrollBarVisible (this, visible)) {
- sendEvent (visible ? SWT.Show : SWT.Hide);
- parent.sendEvent (SWT.Resize);
- }
-}
-
-}

Back to the top